摘要
起重机用新型驱动装置采用外转子结构,且相对于传统起升机构的一体化程度更高,易造成定子绕组散热困难。有别于传统电机设备的断续工作制,对温升计算提出了新的问题。根据设备特点,设计空心轴风冷的冷却结构。基于流体力学和传热学基本原理,建立流固耦合数学模型。以一台额定功率为90 kW的驱动装置为例,通过计算流体力学软件及其嵌入的自定义函数,依据传统起重机械设计要求的机构工作级别和极限操作工况,进行编程及模拟仿真。将温升计算结果与同等条件下试验数据进行对比,验证计算方法的科学性,并分析冷却机构的合理性,最终结果为后续起重机驱动装置的散热研究提供参考依据。
Because the new drive device for the crane has an outer rotor structure and is more integrated than the traditional hoisting mechanism,it is easy to cause difficulty in dissipating heat from the stator winding.It is different from the intermittent working system of traditional electrical equipment,which puts forward a new problem for the calculation of temperature rise.According to the characteristics of the equipment,the air cooling structure of hollow shaft is designed.Based on the basic principles of fluid mechanics and heat transfer,a mathematical model of fluid-structure coupling is established.Taking a 90 kW rated power drive device as an example,using the computational fluid dynamics(CFD)software and its embedded user-defined function,according to the mechanism working level and limit operation conditions required by the traditional crane design,programming and simulation are carried out.The temperature rise calculation results are compared with the experimental data under the same conditions to verify the scientificity of the calculation method,and the rationality of the cooling structure is analyzed.The final conclusion provides a reference for the follow-up research on the heat dissipation of crane drive devices.
作者
王浩潇
韩雪岩
马鑫
宁杰
WANG Haoxiao;HAN Xueyan;MA Xin;NING Jie(National Engineering Research Center for Rare-Earth Permanent Magnetic Machines,Shenyang University of Technology,Shenyang 110870,China)
出处
《电机与控制应用》
2021年第11期51-57,共7页
Electric machines & control application
关键词
起重机机构
流固耦合
空心轴风冷
温度场计算
断续工作制
mechanism of crane
fluid-structure coupling
air cooling of hollow shaft
temperature field calculation
intermittent duty
